深度文章系列 03 • 台灣 • 海纜基礎設施 • 外島脆弱性
Article Series 03 • Taiwan • Cable Infrastructure • Outer Island Vulnerability
台灣位於亞太地區海底電纜的十字路口。從日本、韓國向南延伸至東南亞、澳洲，以及連接美洲的跨太平洋幹線，大量電纜必須繞過或途經台灣周邊海域。台灣海峽雖然平均水深僅約 60 公尺（屬淺海），但正因如此，電纜更容易暴露在漁業活動與船錨的威脅之下。
台灣本島目前有 14 條國際海底電纜登岸（包括台北縣八里、頭城、台南、高雄等登陸站），連接美國、日本、香港、菲律賓、關島等地。這些電纜是台灣對外通訊、金融交易、半導體訂單的實體基礎。
Taiwan sits at the crossroads of Asia-Pacific submarine cables. Cables running from Japan and South Korea southward to Southeast Asia and Australia, as well as transpacific trunk routes to the Americas, must skirt or pass through Taiwan's surrounding waters. The Taiwan Strait averages only about 60 meters in depth — shallow water that makes cables far more vulnerable to fishing activity and anchors.
Taiwan's main island currently has 14 international submarine cables landing at stations in Bali (New Taipei), Toucheng, Tainan, and Kaohsiung, connecting to the US, Japan, Hong Kong, the Philippines, Guam, and beyond. These cables are the physical backbone of Taiwan's external communications, financial transactions, and semiconductor order flows.
台灣本島的 14 條國際電纜提供了一定的冗餘——即使幾條同時中斷，其他電纜仍可承接流量。但外離島的情況截然不同。
Taiwan's main island has 14 international cables providing redundancy — if a few are cut simultaneously, others can absorb the traffic. But the outer islands face a very different situation.
海底電纜損壞本是全球性的常態現象——每年全球約 100–200 起，多數源自漁業和船錨。但台灣周邊海域的特殊地緣環境，使斷纜頻率遠超應有的比例。
Submarine cable damage is a global norm — roughly 100–200 incidents per year worldwide, mostly from fishing and anchors. But Taiwan's unique geopolitical environment means break frequency far exceeds what geography alone would predict.
海底電纜修復是一項極為專業、耗時且昂貴的工程。全球專業海纜維修船（Cable Repair Ship）僅約 60 艘，分佈在各大洋，往往需要數日才能抵達出事海域。
更棘手的是：如果多條電纜同時受損（如 2006 年恆春地震），有限的維修船隻必須排隊——等待修復的時間可能長達數月。這正是「灰色地帶攻擊」同時針對多條電纜的場景，所能造成的最大損害。
Submarine cable repair is an extraordinarily specialized, time-consuming, and expensive undertaking. There are only about 60 dedicated cable repair ships in the world, distributed across the oceans, often requiring days just to reach the incident site.
More challenging still: if multiple cables are simultaneously damaged (as in the 2006 Hengchun earthquake), the limited pool of repair ships must queue — wait times can stretch to months. This is precisely the maximum-damage scenario of a gray zone attack targeting multiple cables at once.
2023 年馬祖事件後，台灣政府開始更積極地正視海底電纜脆弱性。目前已採取或規劃的措施包括：
Following the 2023 Matsu incident, Taiwan's government has moved more actively to address submarine cable vulnerability. Measures taken or planned include:
台灣的對外連通並非平均散布，而是高度集中在少數登陸站（landing station）。國際海纜在這些站點上岸、與陸地骨幹網路相接。公開資料顯示，台灣本島的主要登陸站集中在北部的頭城、淡水與南部的枋山一帶。
多條主要國際海纜系統在此交會，把台灣接上日本、香港、東南亞與跨太平洋的網路。問題在於：當登陸站與電纜路徑在地理上彼此靠近，單一地點或單一海域的事件，就可能同時影響多條電纜。
這種「地理集中」是效率與脆弱的一體兩面。它讓建設與維運更有效率，卻也意味著少數關鍵節點承擔了不成比例的風險——尤其當這些海域同時是繁忙的漁場與航道時，要區分「意外」與「蓄意」就更加困難。
Taiwan's external connectivity is not spread evenly; it is highly concentrated in a handful of landing stations, where international cables come ashore and connect to the terrestrial backbone. Public records show Taiwan's main landing stations clustered around Toucheng and Tamsui in the north and Fangshan in the south.
Several major international cable systems meet here, linking Taiwan to Japan, Hong Kong, Southeast Asia, and across the Pacific. The catch: when landing stations and cable routes sit geographically close together, an event at a single site or in a single patch of sea can affect multiple cables at once.
This geographic concentration is two sides of one coin — efficiency and fragility. It makes construction and operations more efficient, but it also means a few critical nodes carry a disproportionate share of the risk — and when those waters are also busy fishing grounds and shipping lanes, separating "accident" from "intent" becomes harder still.
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This page is for research and education; detection signals are leads to investigate, not legal or factual findings. See the methodology.